Cheapest return flights from London to Istanbul in September from $122

Best time to book flights for London (LTN) to Istanbul (IST) flights at AirHint

AirHint found the following cheapest return flights from London (LTN) to Istanbul (IST) in September 2025 (see full year).

Return flights

28 Sep - 09 Oct Wizz Air UK direct
16 Sep - 02 Oct Wizz Air UK direct
28 Sep - 16 Oct Wizz Air UK direct
24 Sep - 09 Oct Wizz Air UK direct
26 Sep - 09 Oct Wizz Air UK direct
23 Sep - 09 Oct Wizz Air UK direct
21 Sep - 09 Oct Wizz Air UK direct
16 Sep - 25 Sep Wizz Air UK direct
16 Sep - 01 Oct Wizz Air UK direct
26 Sep - 16 Oct Wizz Air UK direct
29 Sep - 16 Oct Wizz Air UK direct
16 Sep - 24 Sep Wizz Air UK direct
16 Sep - 26 Sep Wizz Air UK direct
16 Sep - 30 Sep Wizz Air UK direct
07 Sep - 25 Sep Wizz Air UK direct
17 Sep - 25 Sep Wizz Air UK direct
01 Sep - 30 Sep Wizz Air UK direct
01 Sep - 18 Sep Wizz Air UK direct
07 Sep - 24 Sep Wizz Air UK direct
24 Sep - 25 Sep Wizz Air UK direct

Also check the deals for one-way flights from London to Istanbul in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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